Ground cellular network communication denial method based on low earth orbit satellite constellation

Abstract

The invention relates to a ground cellular network communication denial method based on a low-earth-orbit satellite constellation, which is applied to the low-earth-orbit satellite constellation and comprises the following steps of: communicating with a ground terminal and a gateway station by adopting a narrow beam; entering a trigger state in response to the first trigger signaling of the gateway station, and receiving a second trigger signaling sent by the ground terminal by adopting wide beam scanning while maintaining narrow beam normal communication; and forwarding the second trigger signaling to the gateway station, further receiving a control signaling of the gateway station, and scheduling the low-orbit satellites executing the denial task according to the control signaling to send narrow beam interference signals to carry out communication denial on the target area. According to the invention, efficient communication blocking can be realized, seamless task switching can be carried out when the satellite moves, and continuous coverage of normal earth communication is ensured.

Description

Technical Field

[0001] This invention relates to the fields of satellite ground equipment and advanced satellite platform technology, and in particular to a method for denying ground cellular network communication based on a low-Earth orbit satellite constellation. Background Technology

[0002] In modern confrontation systems, information dominance has become a core factor determining victory or defeat. Once the communication links upon which the target's command and control system depends are disrupted, its coordination capabilities will suffer a devastating blow.

[0003] Traditional communication denial technologies primarily rely on ground-based equipment, which is limited by the Earth's curvature and terrain obstruction, resulting in limited effective range and vulnerability to destruction. In recent years, space-based denial technology has gained attention, its core concept being the use of satellite platforms to jam ground targets. However, geostationary orbit jamming satellites suffer from significant path loss, high construction costs, and cannot cover high-latitude regions. Single-satellite low-Earth orbit jamming schemes suffer from insufficient continuous coverage due to high-speed satellite movement, require large constellations, and lack dynamic mission switching capabilities. Multi-satellite coordinated jamming relies on static partitioning and centralized ground control; trigger commands are easily intercepted, and a break in the satellite-to-ground link leads to system paralysis. Target location depends on slow responses from external reconnaissance systems, rigid beam allocation prevents dynamic aggregation of jamming energy, and the handover process generates long gaps. Overall, these technologies suffer from systemic shortcomings such as large coverage blind spots, high response delays, low resource utilization, and poor concealment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a method for denying ground cellular network communication based on a low-Earth orbit satellite constellation, which can achieve efficient communication blocking and seamless task switching when the satellite moves, ensuring continuous coverage of normal ground communication.

[0005] The technical solution adopted by this invention to solve its technical problem is: to provide a method for denying communication in a terrestrial cellular network based on a low-Earth orbit satellite constellation, applied to a low-Earth orbit satellite constellation, comprising:

[0006] It uses a narrow beam to communicate with ground terminals and gateway stations;

[0007] In response to the first trigger signaling from the gateway station, the system enters the triggering state and, while maintaining normal narrow-beam communication, uses wide-beam scanning to receive the second trigger signaling sent by the ground terminal.

[0008] The second triggering signaling is forwarded to the gateway station, and then the control signaling of the gateway station is received. According to the control signaling, the low-orbit satellites that are scheduled to perform the denial task send narrow-beam jamming signals to deny communication in the target area.

[0009] Furthermore, the first triggering signaling in response to the gateway station includes:

[0010] After receiving the first trigger signaling from the gateway station, the anchor satellite enters the triggering state. Based on the preset area division strategy, it selects several low-orbit satellites that meet the real-time link evaluation conditions from the adjacent areas as first-level relay nodes. It generates a third trigger signaling based on the first trigger signaling and broadcasts the third trigger signaling to the first-level relay nodes.

[0011] After receiving the third trigger signaling, each current layer relay node enters the trigger state. Based on the preset area division strategy, it selects several low-orbit satellites that meet the real-time link evaluation conditions from the low-orbit satellites that have not entered the trigger state in the adjacent area as the next layer relay nodes, and broadcasts the third trigger signaling to the next layer relay nodes.

[0012] Repeat the previous step until all nodes to be used are in the triggered state.

[0013] Furthermore, the anchor satellite is a preset low-orbit satellite selected by the gateway station, or a low-orbit satellite selected by the gateway station that meets the real-time dynamic evaluation conditions.

[0014] Furthermore, the real-time dynamic evaluation conditions include satellite coverage, link stability, and the current location of the satellite.

[0015] Furthermore, the real-time link evaluation conditions include physical distance, signal propagation delay, and link stability.

[0016] Furthermore, the first trigger signaling and the third trigger signaling have the same message format, including signaling ID, sender ID, receiver ID, remaining forwarding count, timestamp, area mask, and trigger status.

[0017] Furthermore, the value of the remaining forwarding count field of the third triggering signaling decreases with each broadcast.

[0018] Furthermore, it also includes:

[0019] When a node detects that the remaining forwarding count field of the third triggering signaling it broadcasts is zero, it sends a final status confirmation message to the superior node via ACK signaling. The ACK signaling adds a list of unresponsive nodes to the message format.

[0020] When a node receives the ACK signaling from all its subordinate nodes, or when a subordinate node reports a timeout, it marks its own status as "completed" and, based on the feedback from its subordinate nodes, summarizes the list of unresponsive nodes, generates the summarized ACK signaling, and sends it to the superior node.

[0021] Furthermore, determining that all low-Earth orbit satellites performing the denial mission have entered a triggered state includes:

[0022] Obtain the ACK signaling from all first-layer relay nodes, and then determine whether all nodes to be used have been successfully triggered;

[0023] If a node to be used is not triggered, its relevant superior nodes are instructed to resend the third triggering signal layer by layer and receive feedback until all low-orbit satellites performing the denial mission have entered the triggering state.

[0024] Furthermore, the second trigger signaling sent by the ground terminal using wide-beam scanning is performed by using the same frequency hopping mode as the ground terminal.

[0025] Furthermore, the method of transmitting narrow-beam interference signals to deny communication in the target area is achieved by using a multi-satellite collaborative approach to form beam superposition in the target area.

[0026] Furthermore, low-Earth orbit satellites performing denial missions obtain communication beam output and denial beam output through programmable beamforming technology, enabling them to maintain normal communication in non-target areas while denying communication in the target area.

[0027] Furthermore, the control signaling includes the geographical coordinates and coverage area of ​​the target area, interference frequency band, communication beam allocation parameters, denial beam allocation parameters, mission duration, and handover timing information.

[0028] Beneficial effects

[0029] By adopting the above-mentioned technical solution, the present invention has the following advantages and positive effects compared with the prior art:

[0030] This invention designs three different operating modes, enabling a low-Earth orbit satellite constellation to maintain normal communication with non-target areas using narrow beams while periodically scanning with wide beams to receive signaling from friendly mobile terminals. This combination of narrow and wide beams ensures the stealth of denial triggering without affecting the satellite's regular communication functions, solving the problems of traditional triggering mechanisms being easily intercepted and incompatible with normal communication. Furthermore, the wide-beam frequency hopping method is used during scanning reception. On the one hand, the wide coverage of the wide beam reduces the targeting of signaling reception, making it less likely to be detected by enemy electronic reconnaissance; on the other hand, the frequency hopping mode reduces the risk of signaling interception.

[0031] This invention employs a tree-like recursive broadcast distributed triggering mechanism, using an anchor satellite as the root node to propagate triggering signals layer by layer. It recursively triggers neighboring satellites that meet the link conditions, forming a tree-like exponential propagation pattern. This mechanism eliminates the need for centralized ground control of all satellites, resulting in an exponential improvement in constellation state switching efficiency compared to the traditional ground-based individual triggering mode. Furthermore, redundant transmission of inter-satellite links ensures that even if some satellites or gateway stations fail, the triggering signals can still propagate through other paths, completely resolving the problems of low wake-up efficiency and poor resilience in the traditional ground-based centralized control mode.

[0032] This invention uses multi-satellite narrow beam spatial superposition and programmable beamforming technology to concentrate the interference beams of multiple satellites in the target area, enhancing the interference effect without increasing the power of a single satellite. In addition, programmable beamforming supports a single satellite to generate both communication beams and denial beams simultaneously, achieving precise denial and coordination of normal communication in non-target areas, solving the problems of limited power of traditional single-satellite interference and easy damage to civilian communications. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of multi-satellite multi-beam denial according to an embodiment of the present invention;

[0034] Figure 2 This is a flowchart illustrating an embodiment of the present invention;

[0035] Figure 3 This is a flowchart illustrating the satellite state switching execution process according to an embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the ground station sending triggering signaling according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic diagram of broadcast triggering signaling according to an embodiment of the present invention;

[0038] Figure 6 This is a schematic diagram of the ACK signaling according to an embodiment of the present invention;

[0039] Figure 7 This is a schematic diagram of mobile terminal signaling transmission and satellite wide beam reception according to an embodiment of the present invention;

[0040] Figure 8 This is a schematic diagram of the multi-star collaborative process according to an embodiment of the present invention;

[0041] Figure 9 This is a comparison chart of signal-to-noise ratios under different conditions in the embodiments of the present invention;

[0042] Figure 10 This is a schematic diagram illustrating the rejection of ground-based honeycombs according to an embodiment of the present invention. Detailed Implementation

[0043] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0044] The embodiments of the present invention relate to a method for blocking communication in a target area using multiple satellites and multiple beams in a direct connection scenario of L-band mobile phones. Its application scenarios are as follows: Figure 1 As shown, in a specific phase of confrontation, our personnel arrive at the target area carrying mobile terminals. After the coordinates and frequency bands of communication nodes within the target area are confirmed, a low-Earth orbit satellite system is deployed in a pre-set orbit to implement full-time denial of communication to that area. In this way, the adversary's command and control capabilities are effectively constrained, providing support for our side to gain strategic initiative during the confrontation. Key concepts in this scenario include:

[0045] Area to be Denied (Target Area): The area where the target is located;

[0046] Our mobile terminal (ground terminal): sends a signaling message to the satellite containing the target's specific coordinates and the frequency band it is using;

[0047] Wide beam: After entering denial mode, it is activated periodically to scan for and receive signaling sent by our mobile terminals;

[0048] Inter-satellite link: A communication link established between satellites, which can transmit information even in areas not covered by gateway stations;

[0049] Gateway station: Receives signaling, data, and location information from ground mobile terminals, and simultaneously sends signaling to control satellites;

[0050] In this embodiment, the operating modes of low-Earth orbit satellites are divided into the following types:

[0051] Conventional multi-satellite narrow beam ground coverage communication mode: Mobile phones directly connect to low-orbit satellites to conduct normal multi-satellite multi-beam ground coverage communication;

[0052] Narrow beam communication + wide beam scanning mode: A wide beam is generated periodically using a wide beamforming method to receive triggering signals sent by our mobile terminal;

[0053] Narrow beam communication + denial mode: When the satellite moves to the line of sight of the denial area, it sends a narrow beam to interfere and deny communication, while the narrow beam allows normal communication to the non-denial area.

[0054] This implementation method is applied to a low-Earth orbit satellite constellation. Its overall process can be divided into three parts: satellite state switching, mobile terminal signaling transmission and satellite wide-beam reception, and multi-satellite collaborative communication denial. Figure 2 As shown, it specifically includes:

[0055] S0 satellite status switching: communicates with ground terminals and gateway stations using a narrow beam; enters the trigger state in response to the first trigger signaling from the gateway station;

[0056] S1 mobile terminal signaling transmission and satellite wide beam reception: While maintaining normal narrow beam communication, wide beam scanning is used to receive the second trigger signaling sent by the ground terminal;

[0057] S2 Multi-Satellite Cooperative Communication Denial: Forwards a second triggering signaling to the gateway station, then receives control signaling from the gateway station, and schedules low-orbit satellites to send narrow-beam jamming signals to deny communication to the target area according to the control signaling.

[0058] Step S0, satellite state switching, involves changing the satellite from the usual multi-satellite narrow-beam ground coverage communication mode to a narrow-beam communication + wide-beam scanning mode required for a specific period. In scanning mode, fixed time slots are allocated to receive uplink denial mode triggering signals sent by our mobile terminals. The entire state switching process is as follows: Figure 3 As shown, it includes:

[0059] After receiving the first trigger signaling from the gateway station, the anchor satellite enters the triggering state. Based on the preset area division strategy, it selects several low-orbit satellites that meet the real-time link evaluation conditions from the adjacent areas as first-level relay nodes. It generates a third trigger signaling based on the first trigger signaling and broadcasts the third trigger signaling to the first-level relay nodes.

[0060] After receiving the third trigger signaling, each current layer relay node enters the trigger state and sends a status confirmation message to the upper-level node via ACK signaling. At the same time, based on the preset area division strategy, it selects several low-orbit satellites that meet the real-time link evaluation conditions from the low-orbit satellites that have not entered the trigger state in the adjacent area as the next layer relay nodes, and broadcasts the third trigger signaling to the next layer relay nodes.

[0061] Repeat the previous step until all nodes to be used are in the triggered state.

[0062] The following provides a more detailed implementation method, which mainly includes the following five parts.

[0063] 1) Ground station initiation and anchor point selection

[0064] The ground gateway station initiates the entire denial system activation process. A preset satellite or a satellite selected through real-time dynamic evaluation is chosen as the initial "anchor satellite".

[0065] 2) Anchor satellite activation and first-level broadcast

[0066] After receiving the ground trigger signal, the anchor satellite immediately transitions to broadcast mode.

[0067] Based on real-time link assessments (physical distance, signal propagation delay, and link stability), anchor satellites use a predefined partitioning strategy to select satellites with stable connections within their neighborhood as "first-layer relay nodes."

[0068] The anchor satellite will broadcast a trigger signaling message with the TTL (Time-To-Live) field to the selected first-level relay satellite.

[0069] 3) First-layer relay response and state feedback

[0070] After the first-layer relay satellite successfully receives the trigger signal, it completes its own state transition and enters the trigger state.

[0071] The status acknowledgment message (ACK) is sent back to the superior node (anchor satellite) and / or gateway station via inter-satellite link.

[0072] The ACK message contains the satellite's unique identifier and current status information.

[0073] 4) Recursively propagate to subsequent levels

[0074] The first-layer relay satellite (and subsequent relay satellites) that has completed the state transition uses its internal real-time topology information to select neighboring satellites that have not yet entered the trigger state. Based on a preset partitioning strategy and selective broadcasting mechanism, it broadcasts trigger signaling to the selected next-layer (second layer and subsequent layers) satellites.

[0075] Each time a broadcast is forwarded, the TTL value in the signaling is decremented to control the maximum spread depth of the signaling and prevent network congestion.

[0076] 5) Network-wide status confirmation and targeted retransmission

[0077] a. Satellite triggering and ACK feedback:

[0078] Any satellite (including relays at all levels) that receives the trigger signal and successfully enters the trigger state automatically generates an ACK confirmation message containing its own unique identifier and status information;

[0079] The ACK is fed back to the signaling initiating node along the signaling path via the inter-satellite link.

[0080] b. Monitoring between the gateway station and its superior nodes:

[0081] Real-time monitoring of network coverage;

[0082] Dynamically detect satellites that have not received signaling or have not been successfully triggered (i.e., transmission blind spots);

[0083] Directional retransmission will be performed on satellites that fail to trigger the signal.

[0084] c. Overall diffusion mechanism:

[0085] A tree-like recursive diffusion pattern is formed with anchor satellites as the root;

[0086] Triggering signaling propagates exponentially through multi-level and zoned broadcasting.

[0087] 6) Signaling format and interaction process

[0088] Signaling field description:

[0089] field name type meaning TriggerID uint32 The unique identifier triggered this time SrcID uint64 Unique identifier of the sending satellite or ground station DstID uint64 Unique identifier of the receiving satellite or ground station TTL uint8 Remaining forwarding count Timestamp uint64 UTC millisecond timestamp RegionMask uint16 Geographic / zonal range mask Status uint8 0 = Not triggered, 1 = Triggering, 2 = Completed MissingList list List of unresponsive node IDs Signature bytes Digital signature, tamper-proof

[0090] Signaling types and interaction flow:

[0091] a. Ground station initiation and anchor point selection:

[0092] The ground station selects the AnchorID (anchor satellite) and generates a trigger signal. An example of the fields is shown below. Figure 4 .

[0093] b. Anchor satellite activation and first-level broadcast:

[0094] Upon receiving TRIGGER_INIT, the anchor point switches to broadcast mode and assesses the physical link quality. It selects several satellite groups with the ID Relay1_Set from the neighborhood, generates a broadcast trigger signal with TTL–1, and broadcasts it interplanetarily to the relay satellite. Example fields are shown below. Figure 5 .

[0095] c. First-layer relay response and status feedback:

[0096] Each relay satellite receiving the broadcast (regardless of its layer) performs the following actions: decrements the TTL by 1 and updates the timestamp; checks if the TTL is greater than 0. If the TTL > 0, it constructs a broadcast trigger signaling for a new layer, selects the next layer relay set (i.e., the secondary relay satellite) based on the node's neighborhood topology and partitioning strategy, and broadcasts it in parallel via inter-satellite links; if the TTL = 0, it enters the final triggering state and prepares to send ACK signaling to the superior node.

[0097] d. Reverse reporting of ACK from the last layer relay and intermediate layers:

[0098] When a node detects that the TTL of its broadcast message has reached 0 and enters the final trigger state, it immediately generates and unicasts an ACK to its parent node (i.e., the sender's SrcID of the trigger signaling). Upon receiving all lower-level ACKs or after a timeout, the parent node marks its own status as "completed," summarizes the list of unresponsive satellite node IDs, and then sends the summarized ACKs to higher levels. This process proceeds layer by layer upwards along the "parent node chain" at the time of triggering, until it reaches the anchor satellite or ground gateway station. Field examples are shown below. Figure 6 .

[0099] e. Full network coverage confirmation and targeted retransmission:

[0100] Once the anchor satellite / ground station receives the aggregated ACKs from all first-layer relays, it can be inferred that network triggering has been completed. Compare the list of all expected nodes under TriggerID to check for any nodes that failed to trigger or lost ACKs. If any node to be used has not been triggered, initiate a directed retransmission, instructing the relevant superior node to resend the trigger signaling, and repeat the above broadcast and reverse backhaul process until full coverage is achieved.

[0101] Step S1 enables precise transmission of target information through signaling transmission from the mobile terminal and wide-beam reception from the satellite. This process requires the cooperation of three parts: the ground mobile terminal, the satellite, and the gateway station.

[0102] The following provides a more specific implementation method, such as Figure 7 As shown, it mainly includes the following three parts.

[0103] 1) Frequency hopping communication of ground mobile terminals

[0104] Location and activation: Upon arrival at the target location, enter signaling transmission mode.

[0105] Time synchronization: According to the system's preset strategy, it is strictly aligned with the satellite receiving window to ensure signaling capture.

[0106] Frequency hopping transmission: The target address and interference task information are sent in batches on multiple frequencies according to a preset frequency hopping mode, reducing the risk of being maliciously interfered with or captured.

[0107] ACK Listening and Acknowledgment: After sending, enter the ACK listening state. If an ACK is received from the satellite, transmission stops; if no ACK is received, transmission continues until acknowledgment is completed.

[0108] 2) Satellite wide-beam reception

[0109] Triggering activation state: Enters activation state after receiving a trigger signaling from the gateway station.

[0110] Wide beamforming: Wide beamforming is performed according to the preset antenna array to achieve wider area coverage. Due to the relatively small amount of signaling information, a low-frequency, low-bit-rate modulation scheme is selected during wide beam scanning to improve detection capability.

[0111] Frequency hopping scanning: Using the same frequency hopping mode as the ground terminal, scanning and receiving on multiple frequency points to improve anti-interference capability.

[0112] Data caching and transmission: All received signal data is cached within the time slot and transmitted via inter-satellite link or direct gateway after the time slot ends.

[0113] 3) Signal analysis and control command issuance at the gateway station

[0114] Data preprocessing: Error detection, signal enhancement, and noise reduction are performed on the received frequency hopping signal.

[0115] Information analysis: Extract target location coordinates and interference frequency band information, and classify and process signaling involving multiple target areas.

[0116] Satellite selection: Based on satellite coverage, link stability, and current location, select the most suitable satellite to forward subsequent instructions.

[0117] Issue instructions: Send narrow beam instructions to the selected satellite to ensure complete reception of the feedback ACK confirmation signal.

[0118] The design focus of step S2, multi-satellite collaborative execution of communication denial, is to achieve real-time scheduling and seamless task switching in the event of rapid changes in LEO satellite positions, such as... Figure 8 As shown, it is divided into the following three parts:

[0119] 1) Satellite mission scheduling and switching

[0120] The gateway station or command center calculates the satellite constellation covering the target area based on real-time satellite positioning and orbit prediction information. The system selects a batch or a single optimal satellite to perform the denial mission based on coverage effectiveness and link quality, and plans mission handover in advance to ensure the target area remains covered. When a mission satellite is about to leave the coverage area, mission instructions are sent to the next satellite in advance to achieve a smooth handover.

[0121] 2) Beam and power allocation

[0122] Multi-beam capability: Each satellite obtains multiple beam outputs through programmable beamforming technology.

[0123] Beam classification: divided into communication beams (narrow beams oriented to normal communication links) and denial beams (transmitting jamming signals in the target jamming frequency band).

[0124] Coordinated jamming: Satellites operate at normal power levels, and multiple satellites work together to form beam superposition in the target area, thereby increasing the overall jamming power.

[0125] Dynamic power allocation: Adjusts the interference contribution of each satellite without requiring individual satellites to increase their output power, thus protecting the equipment from overload and improving the overall interference effect.

[0126] 3) Control signaling interaction

[0127] Control signaling is issued by the gateway station and includes the following:

[0128] The geographical coordinates and coverage area of ​​the target region;

[0129] Interference frequency band (known in advance, clearly directed at the target);

[0130] Beam assignment parameters (parameters for communication beams and denial beams);

[0131] Task duration and switching timing information.

[0132] After receiving instructions, the satellite adjusts its operational status and simultaneously sends an ACK (acknowledgment) to the gateway station, achieving end-to-end status synchronization. Satellites also share parameters via inter-satellite links to ensure accurate information transmission during mission handover.

[0133] The effects of this implementation method will be illustrated below with specific examples.

[0134] Signal-to-interference-plus-noise ratio of the target receiving terminal (UE) for:

[0135]

[0136] in, This indicates the received power of the ground base station signal reaching the UE. Indicates the number of visible beams. Indicates noise power. This indicates the received power of a single beam from a low-orbit satellite reaching the UE.

[0137] Free space path loss The model is represented as:

[0138]

[0139] in, Indicates the carrier frequency. Indicates the distance between the transmitting and receiving ends.

[0140] like Figure 9 As shown, after determining the target SNR, when satellite interference causes a 6dB decrease in signal-to-noise ratio, the coverage distance must be reduced by half (6dB reduction in path loss) to compensate for the loss in signal-to-noise ratio.

[0141] like Figure 10 As shown, according to the direct connection constellation deployment (Scon5 / 6 / 7), an average of 15 satellites cover the target area at a certain time, with 16 beams per satellite, for a total of N = 16 * 15 = 240 beams. At this time:

[0142]

[0143] The radius of the cell is the same as the original.

[0144] The coverage area has been reduced to the original .

Claims

1. A method for denying communication in a terrestrial cellular network based on a low-Earth orbit satellite constellation, characterized in that, Applications include low-Earth orbit satellite constellations: It uses a narrow beam to communicate with ground terminals and gateway stations; In response to the first trigger signaling from the gateway station, the system enters the triggering state and, while maintaining normal narrow-beam communication, uses wide-beam scanning to receive the second trigger signaling sent by the ground terminal. The second triggering signaling is forwarded to the gateway station, and then the control signaling of the gateway station is received. According to the control signaling, the low-orbit satellites that are scheduled to perform the denial task send narrow-beam jamming signals to deny communication in the target area.

2. The method according to claim 1, characterized in that, The first triggering signaling in response to the gateway station includes: After receiving the first trigger signaling from the gateway station, the anchor satellite enters the triggering state. Based on the preset area division strategy, it selects several low-orbit satellites that meet the real-time link evaluation conditions from the adjacent areas as first-level relay nodes. It generates a third trigger signaling based on the first trigger signaling and broadcasts the third trigger signaling to the first-level relay nodes. After receiving the third trigger signaling, each current layer relay node enters the trigger state. Based on the preset area division strategy, it selects several low-orbit satellites that meet the real-time link evaluation conditions from the low-orbit satellites that have not entered the trigger state in the adjacent area as the next layer relay nodes, and broadcasts the third trigger signaling to the next layer relay nodes. Repeat the previous step until all nodes to be used are in the triggered state.

3. The method according to claim 2, characterized in that, The anchor satellite is a preset low-orbit satellite selected by the gateway station, or a low-orbit satellite selected by the gateway station that meets the conditions for real-time dynamic evaluation.

4. The method according to claim 2, characterized in that, The first trigger signaling and the third trigger signaling have the same message format, including signaling ID, sender ID, receiver ID, remaining forwarding count, timestamp, area mask, and trigger status.

5. The method according to claim 4, characterized in that, The value of the remaining forwarding count field of the third triggering signal decreases with each broadcast.

6. The method according to claim 5, characterized in that, Also includes: When a node detects that the remaining forwarding count field of the third triggering signaling it broadcasts is zero, it sends a final status confirmation message to the superior node via ACK signaling. The ACK signaling adds a list of unresponsive nodes to the message format. When a node receives the ACK signaling from all its subordinate nodes, or when a subordinate node reports a timeout, it marks its own status as "completed," summarizes the list of non-responding nodes based on the feedback from its subordinate nodes, generates the summarized ACK signaling, and sends it to the superior node.

7. The method according to claim 6, characterized in that, The determination that all low-Earth orbit satellites performing denial missions have entered a triggered state includes: Obtain the ACK signaling from all first-layer relay nodes, and then determine whether all nodes to be used have been successfully triggered; If a node to be used is not triggered, its relevant superior nodes are instructed to resend the third triggering signal layer by layer and receive feedback until all low-orbit satellites performing the denial mission have entered the triggering state.

8. The method according to claim 1, characterized in that, The second trigger signaling sent by the ground terminal using wide-beam scanning is performed by using the same frequency hopping mode as the ground terminal.

9. The method according to claim 1, characterized in that, The method of transmitting narrow-beam interference signals to deny communication in the target area is achieved by using a multi-satellite collaborative approach to form beam superposition in the target area.

10. The method according to claim 1, characterized in that, Low-Earth orbit satellites that perform denial missions obtain communication beam output and denial beam output through programmable beamforming technology, so that they can maintain normal communication in non-target areas while denying communication in the target area.

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